Make the round regulating stand of penstock
Technical field:
The utility model relates to a kind of round regulating stand, particularly be a kind of round regulating stand that is used for the making penstock in fields such as power station.
Background technology:
At present, the power station makes penstock and generally adopts to support in the welding and prevent that tube coupling from losing circle, and interior support assemblies is loaded down with trivial details and waste a large amount of section bars (be after the section bar welding disposable, not reproducible utilization), to project gross investment reduce cost unfavorable; And support also need spend great amount of manpower and material resources in the welding.Because the welding of interior support and penstock tube wall, and then injured the steel pipe mother metal, be not easy assurance for the fabricating quality of penstock; After treating that penstock is adjusted in the installation position, welded, builds completion, concrete reaches and coagulates after date in advance, also will remove the interior support of penstock inwall welding, and interior support excision process will certainly injure the steel pipe inner tubal wall, thereby must do over again reparation; Interior supporting removal also will be wasted more manual work and cutting gas.
The utility model content:
The purpose of the utility model is in order to overcome above-mentioned shortcoming; A kind of easy to use, reliable, easy disassembling is provided; Practice thrift the feed consumption in man-hour in the time of can guaranteeing to install and use, do not injure the penstock tube wall; Can guarantee again to be convenient to remove after penstock is installed, can reuse and effectively prevent to lose in steel pipe manufacturing, transportation, the installation process circle, the round regulating stand of the making penstock of the quality of assurance penstock.
The purpose of the utility model realizes like this:
The utility model is made the round regulating stand of penstock; Comprise circular force bearing plate, at least three group diameter arm groups; Have two symmetries to be positioned at the diameter arm that force bearing plate both sides and axis line pass the force bearing plate center of circle in every group of diameter arm group, an end of every diameter arm is connected on the force bearing plate and screw jack, the radian end plate that the termination of screw jack has outer wall to contact with the penstock inwall is housed on the other end; The diameter arm is main stressed, force transferring part, can adopt seamless steel pipe to process; Screw jack is main stressed, force transferring part, can buy finished product, through the significance bit transposition seamless power steel pipe radian of screw pair transmission (lever plug), is core component; The radian end plate can weld with screw jack, and radian end plate outer wall is consistent with the penstock internal diameter, and outer wall contacts with the steel pipe inwall, prevents the stressed injury steel pipe of tube wall mother metal; Force bearing plate dispersion diameter arm bearing capacity, the end, the centre that reduce the diameter arm are stressed, strengthen its stability; Diameter arm and screw jack composition push up the controlled pressure steel pipe inner diameter of raising the head.
Between above-mentioned adjacent diameter arm stay pipe is housed, guarantees the stability of round regulating stand structure division.
Above-mentioned diameter arm group is four groups.
The utility model is made the screw jack at the many groups diameter arm group two ends in the penstock round regulating stand and is passed through the screw pair transmission by manpower; Raising the head and shrink or elongation in the feasible many groups of tops of being made up of diameter arm group and screw jack, reaches two sections isometric, equidistance of screw jack of each coaxial line; Coaxial line penstock round regulating stand transfers circular diameter to equate, makes each axis internal diameter of penstock equate to reach and transfers the circle effect, behind the penstock installation in position round regulating stand is taken out recycling (needing when penstock welds, to install).
The utility model satisfies penstock making, transportation, the tube coupling internal intensity is stable when installing; The build-up of pressure steel pipe roundness loses circle when preventing the transportation of penstock penstock; Guarantee the quality of penstock, reduce penstock and make, install measure cost, practice thrift cost, improve profitability.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the utility model working state figure.
Fig. 4 is the left view of Fig. 3.
The specific embodiment:
Referring to Fig. 1, Fig. 2, present embodiment is made the round regulating stand of penstock, comprises circular force bearing plate 1, four groups of diameter arm groups 2.The axis line that has two symmetries to be positioned at the force bearing plate both sides in every group of diameter arm group passes the diameter arm 3 in the force bearing plate center of circle.One end of every diameter arm is connected on the force bearing plate and screw jack 4 is housed on the other end.The radian end plate 5 that the termination of screw jack has outer wall to contact with the penstock inwall.Stay pipe 6 is housed between the adjacent diameter arm.
Penstock round regulating stand service routine is (referring to Fig. 3, Fig. 4) as follows:
(1) after tile group circle is accomplished; This round regulating stand 7 is placed penstock 8 inwall upper and lower ports 1/3 places (2 groups); Rotate the transmission of screw jack screw pair through manpower and make top contractions (elongation) of raising the head push up to the control circularity of steel pipe inwall, circularity adjustment reaches design, carries out longitudinal seam welding after canonical sized;
(2) after the tube coupling longitudinal seam welding was accomplished, the diameter deviation of each axis of repetition measurement round regulating stand rotated screw jack screw pair transmission (lever plug) through manpower once more and makes that pushing up the contraction of raising the head (or elongation) regulates penstock circularity.Use this round regulating stand to lean on radian end plate and screw jack controlled pressure steel pipe inner diameter, the radian end plate is consistent with the penstock design internal diameter;
(3) transportation, install and all not remove round regulating stand, treat that penstock is installed, adjusted, builds after, rotate screw jack screw pair transmission (lever plug) and make and top contractions of raising the head separate integral body taking-up round regulating stand, recycling with the steel pipe inwall.